Rare T. rex fossil sells for record $50.1 million at auction

By Jacopo Prisco, CNN (CNN) — A Tyrannosaurus rex skeleton from South Dakota has become the world’s most expensive fossil sold at auction, after fetching a record $50,130,000 at Sotheby’s in New York Tuesday. The skeleton, which is about 67 million years old, is nicknamed Gus after the late Gary ‘Gus’ Licking, a cattle rancher